You should not use this medication if you are allergic to mometasone, or to milk proteins.

To make sure mometasone is safe for you, tell your doctor if you have glaucoma or cataracts, or if you have been sick or had an infection of any kind.

FDA pregnancy category C. It is not known whether mometasone will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.

It is not known whether mometasone passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

Mometasone inhalation can affect growth in children. Talk with your doctor if you think your child is not growing at a normal rate while using this medication.

Do not give this medicine to a child younger than 4 years old without medical advice.

Long-term use of steroids may lead to bone loss (osteoporosis), especially if you smoke, if you do not exercise, if you do not get enough vitamin D or calcium in your diet, or if you have a family history of osteoporosis. Talk with your doctor about your risk of osteoporosis.

Use exactly as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.

Do not use mometasone to treat an asthma attack that has already begun. It will not work fast enough. Use only a fast acting inhalation medication. Talk with your doctor if any of your asthma medications do not seem to work as well in treating or preventing attacks.

An increased need for medication could be an early sign of a serious asthma attack.

Mometasone is a powder that comes with a special inhaler device preloaded with the medicine. The device will deliver a measured dose of mometasone as a fine spray of powder each time you use the inhaler.

You may or may not be able to feel or taste this powder in your mouth while using the inhaler. Do not use extra doses if you do not feel or taste the powder. Tell your doctor or pharmacist if you think your inhaler is not working properly.

It may take up to 2 weeks before your symptoms improve. Keep using the medication as directed and tell your doctor if your symptoms do not improve after 2 weeks of treatment.

To reduce the chance of developing a yeast infection in your mouth, rinse with water after using mometasone inhalation. Do not swallow.

Asthma is often treated with a combination of drugs. Use all medications as directed by your doctor. Read the medication guide or patient instructions provided with each medication. Do not change your doses or medication schedule without your doctor's advice.

Your dosage needs may change if you have surgery, are ill, are under stress, or have recently had an asthma attack. Do not change your medication dose or schedule without your doctor's advice.

If you were switched from an oral (taken by mouth) steroid to mometasone inhalation, you may need to go back to taking the oral medicine if you are under stress or have an asthma attack or other medical emergency. Wear a medical alert tag or carry an ID card stating that you may need an oral steroid in an emergency.

Seek medical attention if you think any of your asthma medications are not working as well as usual. An increased need for medication could be an early sign of a serious asthma attack.

Store at room temperature away from moisture and heat. When you first open the foil pouch and remove the inhaler device, write the date on the device. Throw away the inhaler after 45 days, or when the dose counter shows "00."

Do not wash your inhaler device or allow it to get wet. Wipe the mouthpiece with a clean dry tissue or cloth after each use.